devpts: add fsnotify create event

Currently, devpts doesn't generate an fsnotify event upon pts creation
because the regular vfs paths aren't involved.  Deallocation, on the other
hand, correctly generates a nameremove event thanks to the d_delete()
invocation in devpts_pty_kill().

This patch adds the missing fsnotify_create() trigger in devpts_pty_new().

Signed-off-by: Florin Malita <fmalita@gmail.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index 643e57b..06ef9a2 100644 (file)
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -19,6 +19,7 @@
 #include <linux/tty.h>
 #include <linux/devpts_fs.h>
 #include <linux/parser.h>
+#include <linux/fsnotify.h>
 
 #define DEVPTS_SUPER_MAGIC 0x1cd1
 
@@ -178,8 +179,10 @@ int devpts_pty_new(struct tty_struct *tty)
        inode->i_private = tty;
 
        dentry = get_node(number);
-       if (!IS_ERR(dentry) && !dentry->d_inode)
+       if (!IS_ERR(dentry) && !dentry->d_inode) {
                d_instantiate(dentry, inode);
+               fsnotify_create(devpts_root->d_inode, dentry);
+       }
 
        mutex_unlock(&devpts_root->d_inode->i_mutex);